应用于某型飞机起落架的双通道磁流变减震器结构设计与磁路优化

Structural Design and Magnetic Circuit Optimization for a Dual MR Damper of a Certain Type Aircraft Landing Gear

针对某型飞机起落架减震要求,设计了一种双阻尼通道式磁流变减震器,双阻尼通道增大了磁流变液流经环形间隙时的黏滞阻尼力以及库仑力的调节范围,磁流变减震器的可控性更高。根据电磁场理论对磁路进行了初步设计计算,并采用ANSYS有限元分析软件对磁流变减震器结构参数进行了进一步优化。通过优化分析得到了最有利于发挥减震器性能的结构参数,减震器结构更加紧凑,磁场分布更加合理,磁场利用率比初始设计提高了1倍多。

For a certain type of aircraft landing gear design requirements,a dual-channel magnetic damper was designed. The dual-channel increased the viscous damping force when the MRF flowed through the annular gap and the adjustment range of the coulomb force,so the magnetic damper had a higher controllability. According to electromagnetic theory,the magnetic circuit was preliminary designed,and ANSYS was used to optimize the structure parameters further. The structure parameters which were most conducive to play the performance of the magnetic damper were got. The structure was more compact,the magnetic field distribution was more reasonable; comparison with the initial design,the magnetic field utilization increased more than doubled.